Received: 6 April 2020
Accepted: 10 February 2021
First Online: 19 February 2021
Ethics approval and consent to participate
: Ethical approval was obtained from the ethical board of the University of Gondar (Ref. No O/V/P/RCS/05/810/2018), and written permission letters were granted from Amhara regional state health bureau, South Wollo Zone and district health offices. Written informed consent was taken from all participants.
: Not applicable.
: The authors declare that there is no competing interest.